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出典:『Wikipedia』 (2010/12/19 03:36 UTC 版)

英語による解説

引用

A Globar is a silicon carbide rod of 5 to 10 mm width and 20 to 50 mm length which is electrically heated up to 1,000 to 1,650 °C (1,832 to 3,002 °F). When combined with a downstream variable interference filter, it emits radiation from 4 to 15 micrometres wavelength. Globars are used as thermal light sources for infrared spectroscopy because their spectral behaviour corresponds approximately to that of a Planck radiator (resp.: black radiator). Alternative middle-infrared luminous sources are Nernst lamps, coils of chrome-nickel alloy or high-pressure mercury lamps.